# 1psf(pound per square feet).

# 1ksf(kilo pound per square feet).

# 1Feet=12inch. 

# 100cm=1metre. 

# 1psi=pound per square inch. 

# 1inch=25.4mm. 

# 1yard=36inch.

 # 1m=3.28feet. 

# 1m=100cm.